Dry meter.



S. SIMPSGN.

DRY METER.

APPLICATION FILED MAR. 20, 1906.

Patented Apr. 5'

Ka ai UNETEH sraras STEPHEN SIMPSON, 0F

EXETEE. ENGLAND.

DRY METER.

Application filed March 20,

[a all whom "it may concern:

Be it known that I STEPHEN SIMPSON, a subject of the King of Great Britain and Ireland, residing at :lregear," SpicerRoad, EXeter, in the county of Devon, England, have invented certain new and useful Improvements in and Relating to Dry Meters, of which the following is a specification.

his invention relates to dry'meters, and has for its object to minimize the liability of escape of gas from the meter, and also to minimize the amount of friction of the mechanism generally and particularly upon the flag wires, by which a strain is put upon the leather diaphragms which tends to make hem porous,

According to the invention I mount the valve mechanism wholly within the valve chamber, that is to say, instead of arranging the crank spindle to which the respective i valves of the meter are connected by links, to protrude through he top of the valve} chamber, and the flag wires brought up to I the top of the meter outside the valve chamher, and the connecting mechanism arranged outside the valve chamber, by which a studing box is necessary to provide for each flag wire and for the crank spindle, the whole of i this mechanism is mounted Within the valve j chamber and the flag wires are brought up into position Within the valve chamber in I such manner that it is necessary only to provide a stufiing box to carry the transmission spindle by means of which the movement of the valve mechanism is transmitted to the index; and inasmuch as this spindle rotates slowly, a very small amount of i'ric- I tion is occasioned, and for that reason and inasmuch as only one stutling box is neces sary, the liabilit to leakage is thus consid erably minimized.

Figure 1, is a sectional plan view of the invention taken on the line w y of Fig. 2; 1 Fig, 2, is a sectional elevation of the same,- Fig. 3 is a detail sectional view of the stufii ing box employed.

in carrying the invention into effect, l. i mount the ires a; upon the same sides of the meter as the valve 5 and l advana't they come up I I I e l I tageously dispose them so t into the valve chamber 0 named bej in lves a, and mount the levers c l extremities and connect Specification of Letters Patent.

- chamber 0 v to seat within Patented Apr, 5, 191th 1906. Serial No. 307,029.

within the valve chamber 0, the mechanism being otherwise substantially the same as that usually provided in dry meters.

The transmission spindle f, by means of which the movement of the crank spindle c is transmitted to the index mechanism I carry within a stutling box it mounted on the vertical wall a" of the valve chamber 0, a worm Wheel j on the inwardly projecting extremity of this transmission spindle f engaging with a Worm 7: upon the crank spindle e, by which the movement of the latter is communicated to the index mechanism 9. I t Will thus be understood that the shape of the transverse vertical 'all z' of the valve is modified to accommodate the whole of the valve mechanism within the valve chamber, and that this wall is advantageously provided at z" in a position transverse to the axis of the transmission spindle for convenience in mounting the stuifing box or hearing it for the transmission spindle f upon the wall, the relative posit-ion of t e valves 6, crank spindle c, and index mechanism 9, is thus not modified from that usual indry meters of the ordinary construction. According to the invention moreover, I advantageously provide the flag wires a with a hearing it upon the bottom of the valve chamber similar to the constructihn shown in Fig. 3, by which the Weight of the flags may be taken, and a substantially frictionless and gastight joint socured, and this I conveniently effect by providing a metallic plate Z or seat upon the base of the valve chamber- 0, through which the respective flag Wire a passes, and upon the flag wire 1 preferably provide a collar m advantageously with a conical under-face conical recess formed around the fiag wire and upon the metallic plate or seat Z aforesaid, but instead of providing seat or" metal, this may be formed of flexible or elastic material such as leather, so that in any event the 'i such asto be sub and to provide a bean s-ti Ma rit will be understood that the crank spindle e is advantageously provided with a bearing n at the bottom and the top of the crank l chamber, and that the flag wires, in addition to having the bearing hereinbefore deeaaaea extended portion and then extended transversely to the casing proper, a valve con- .trolling mechanism located in chamber, a clock work mechanism -located within the upper chamber adjacent to the wall extended at an angle, a transmission shaft connecting said mechanisms, said transmission shaft passing through said scribed at the bottom of the valve chamber transversely extended wall and having a 0, may have a bearing 0 at the top of the chamber by which side strain may be taken off the stuffing box or the conical bearing that may be provided at the bottom of the valve chamber a in the manner 'hereinbefore described.

It will of course be understood that instead of providing a conical seat for the flag wires, I may provide a stuffing box as usual, as well as an additional bearing at the upper part of the flag wire in combination with the stuffing box.

What I claim as my invention and desire to secure by Letters Patent is 1- A gas meter comprising a casing proper, a horizontal partition wall dividing said casing into an upper and lower chamber, an auxiliary chamber in the uppermost chamber, said auxiliary chamber being formed by inclosing walls having a vertical portion proper extending at right angles from the casing, part of said vertical portion being bent at an obtuse angle to said right angular stufiing box bearing in said wall, fiag wires, said flag wires havin ,stufiing box hearings in the bottom wall 0 said auxiliary chamher, said shaft and flag wires having collars .fixed thereto with conical under faces, the

\ aforesaid stuffing boxes, each comprising two casings in screw-threaded engagement, one casing of each stuffing box having a beveled seat corresponding to and receiving one of said collars, a packing within said casings, a coil spring within the other casing of each stuffing box and a washer slidable on each shaft and flag wire, within the casings and adapted to be forced against said packing by the spring;

In testimony whereof I have hereunto signed my name to this specification in the presence of two subscribing witnesses.

STEPHEN SIMPSON.

Witnesses:

WILLIAM EDWARD Evans, F, COLLINS.

said auxiliary 

